Micro/nanostructured porous Fe–Ni binary oxide and its enhanced arsenic adsorption performances

Liu, Shengwen; Kang, Shenghong; Wang, Guozhong; Zhao, Huijun; Cai, Weiping

doi:10.1016/j.jcis.2015.07.038

Cited by 48 publications

(15 citation statements)

References 67 publications

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“…chemisorption (PSO) based rate limiting adsorption phenomenon. 23 27,29 In a similar manner in the present study the substitution of iron(III) by aluminum(III) shows higher adsorption capacity of As(III) (114 mg g À1 ) which is slightly higher than NiFe 2 O 4 ($105 mg g À1 ) adsorbent at equilibrium concentrations (C e ) of 100 ppm (mg L À1 ).…”

Section: Discussion On Arsenic Adsorptionsupporting

confidence: 82%

“…Al 3+ ) in iron oxide (a-Fe 2 O 3 ) and ferrihydrite (Feoxyhydroxide) adsorbents are observed with an increase in the arsenic adsorption behavior. 23 In addition ternary oxide adsorbents like Fe-Al-Ce, Fe-Al-Cr, Fe-Mg-La and Fe-Ca-Zr were highly efficient for removal of uoride ion from contaminated water. 27 Recently, it was shown that pure nickel ferrite (i.e.…”

Section: Introductionmentioning

confidence: 97%

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Aluminum substituted nickel ferrite (Ni–Al–Fe): a ternary metal oxide adsorbent for arsenic adsorption in aqueous medium

et al. 2016

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The adsorption of arsenic [arsenite (As(III)) and arsenate (As(V))] onto aluminum substituted nickel ferrite (Ni-Al-Fe) which is a ternary metal oxide nano adsorbent is evaluated. Qualitative and quantitative studies were performed to understand the adsorption phenomenon. The qualitative studies for both adsorbent and arsenic adsorbed samples were evaluated using FT-IR, Raman and XPS techniques and the quantitative studies were carried out using ICP-OES technique. The results reveal that the maximum adsorption capacities of Ni-Al-Fe adsorbent are around 114 and 103 mg g À1 for As(III) and As(V) species in 100 ppm arsenic equilibrium concentration (C e ) systems. Also, at low initial concentrations (100 and 500 ppb) a better adsorption phenomenon (i.e. WHO guidelines limit of 10 ppb) for the As(V) species onto the Ni-Al-Fe adsorbent was observed. In addition the kinetics of adsorption, and effect of concentration and pH on the adsorption phenomena have been detailed. † Electronic supplementary information (ESI) available: Information about adsorbent synthesis, Raman spectra (individual peak identication), quantitative study related plots and tables and arsenic stretching vibrations from literature. See

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Section: Discussion On Arsenic Adsorptionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 97%

Aluminum substituted nickel ferrite (Ni–Al–Fe): a ternary metal oxide adsorbent for arsenic adsorption in aqueous medium

et al. 2016

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“…Among these technologies, adsorption has been the most preferred removal method because of its various advantages, such as high efficiency, low cost, and easy operability. Numerous materials, including carbon‐based materials and metal oxides , have been used as adsorbents to remove As from water. However, the applications of most of these adsorbents are limited because of their high costs.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Al‐based nanoparticle‐impregnated sawdust as an adsorbent from byproduct for the removal of arsenic(V) from aqueous solutions

Liu

Lei

et al. 2017

Env Prog and Sustain Energy

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In this research, sawdust was modified with chemical reagents to produce an adsorbent from byproduct, namely, Albased nanoparticle-impregnated sawdust (ANIS) to remove arsenate [As(V)] from aqueous solutions. Several methods, including scanning electron microscopy with an energy-dispersive spectrometry, Brunauer-Emmett-Teller surface area analysis, and thermogravimetric analysis, were performed to characterize this material. Results showed that Al-based nanoparticles were successfully impregnated in the sawdust and thus significantly changed their surface characteristics. Batch adsorption studies were conducted to determine the properties and mechanisms of As(V) adsorption onto ANIS. The maximum adsorption capacity of As(V) was 17.76 mg/g, which was higher than that of most adsorbents from byproducts. However, the adsorption of As(V) was adversely affected by alkaline conditions. Some interfering anions, especially phosphate, inhibited the ANIS-induced As(V) removal. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy suggested that the oxygen-containing functional groups of Al oxides were the main contributors to As(V) adsorption, and the main adsorption mechanism was surface complexation. Approximately 2664 bed volumes of simulated groundwater containing 150 mg/L As(V) were treated before a breakthrough was observed in the small-scale column experiments. Thus, ANIS could be an efficient material for As(V) removal. This study indicated that ANIS can be used as a reliable option for As decontamination.

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“…Obviously, the micro/nanostructured particles would prevent agglomeration and possess the structural stability of the bulk and the high activity of the nanoparticles. 28,29 Thus, the ZVI particles with this micro/nanostructure can be a better candidate material to effectively remove Cr(VI). In this study, plate-like micro/nanostructured zero-valent iron (MNZVI) prepared by ball-milling the industrially reduced iron powders is used for the removal of Cr(VI) from aqueous solutions based on chemical reduction.…”

Section: 22mentioning

confidence: 99%

Highly efficient removal of hexavalent chromium in aqueous solutionsviachemical reduction of plate-like micro/nanostructured zero valent iron

et al. 2017

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The removal of hexavalent chromium [Cr(VI)] from aqueous solutions using plate-like micro/nanostructured zero valent iron (MNZVI), which is fabricated in mass production by ball-milling of reductive iron powders, is investigated in this study. It has been shown that this plate-like MNZVI has significantly enhanced ability to remove Cr(VI) from aqueous solutions as compared to commercial zero valent iron (CZVI). Cr(VI) in a concentration of 100 ppm at pH ¼ 2 can be removed nearly completely within 20 min by the addition of 1.5 g L À1 MNZVI. The time-dependent removal amount of Cr(VI) can be well described by a pseudo first-order kinetic model. The reaction rate constant for MNZVI is 20 times larger than that for CZVI.Further experiments have revealed that the Cr(VI) removal is also associated with the pH value and initial concentration of Cr(VI) in the solution, in addition to the iron dosage. These enhanced removal performances are attributed to the iron-induced reduction process of Cr(VI) and the high specific surface area of MNZVI. Further, electroplating wastewater was used to demonstrate the practical applications of MNZVI. The removal capacity is up to 330 mg g À1 in the electroplating wastewater with a 556 ppm initial Cr(VI) content, which is more than 3 times higher than that of CZVI and also much higher than the previously reported results. This study has demonstrated that the ball milling-induced plate-like MNZVI is a good candidate material for efficient treatment of Cr(VI)-containing wastewater.

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Micro/nanostructured porous Fe–Ni binary oxide and its enhanced arsenic adsorption performances

Cited by 48 publications

References 67 publications

Aluminum substituted nickel ferrite (Ni–Al–Fe): a ternary metal oxide adsorbent for arsenic adsorption in aqueous medium

Aluminum substituted nickel ferrite (Ni–Al–Fe): a ternary metal oxide adsorbent for arsenic adsorption in aqueous medium

Evaluation of Al‐based nanoparticle‐impregnated sawdust as an adsorbent from byproduct for the removal of arsenic(V) from aqueous solutions

Highly efficient removal of hexavalent chromium in aqueous solutionsviachemical reduction of plate-like micro/nanostructured zero valent iron

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